Printing and winding device for decorative paper
By introducing adjustment units and flattening units into the decorative paper printing and winding device, the tension and mechanical flattening folds are dynamically adjusted, and the wrinkles caused by tension fluctuations and thickness changes during the decorative paper rolling process are solved, and high-quality decorative paper rolling is achieved.
Patent Information
- Application Number
- CN202510743462.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2025-08-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the printing and winding process of decorative paper, the tension cannot be dynamically adjusted when the rolling diameter increases or the printing speed fluctuates, resulting in tension attenuation when the rolling diameter changes. The fluctuation of the speed causes a sudden change in tension, causing wrinkles of the decorative paper. In addition, traditional devices lack an adaptive compensation mechanism and cannot adjust the tension gradient according to the thickness changes, resulting in uneven tightness and paper damage.
A decorative paper printing and winding device is designed, including an adjustment unit and a flattening unit. The adjustment unit dynamically adjusts the tension through the cylinder and swing arm mechanism. The flattening unit mechanically flattens the wrinkles through the reciprocating expansion mechanism and the roller to achieve compensation for tension fluctuations and adaptive adjustment of thickness changes, ensuring the stability and flatness of the tension gradient.
It effectively reduces the folding rate of rolling, improves the equipment's adaptability to thickness fluctuations, shortens the material replacement and debugging time, and achieves high-quality decorative paper rolling.
Smart Images
Figure CN120482803A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of printing and winding, and more particularly to a decorative paper printing and winding device. Background Art
[0002] Decorative paper is a specialty industrial paper used in applications such as wood-based panels, furniture veneers, and interior decoration. Its core function is to achieve decorative effects through printed patterns and to provide a protective covering for the underlying substrate. In the product structure, decorative paper is typically laid beneath a surface layer of wear-resistant paper or a transparent balancing layer, directly adhered to the substrate surface. The patterned pattern, created through the gravure printing process, creates a visually appealing aesthetic. In the field of decorative paper printing and winding, wrinkles generated during the winding process have long been a major constraint on product quality and production efficiency.
[0003] When the winding diameter increases or the printing speed fluctuates, the tension cannot be dynamically adjusted, resulting in tension attenuation when the roll diameter changes and sudden tension changes caused by speed fluctuations, which directly causes wrinkles in the winding of the decorative paper. At the same time, when the thickness of the decorative paper changes, the traditional device lacks an adaptive compensation mechanism. The radial thrust generated by the thickness difference cannot be buffered, and the tension gradient cannot be automatically adjusted according to the thickness, which aggravates the uneven winding tightness and end surface wrinkles.
[0004] In addition, the existing static flattening roller cannot synchronously adjust the flattening position and pressure with tension fluctuations, the flattening frequency and winding speed are mismatched, and the lack of elastic support can easily cause paper damage. In addition, the tension control, thickness compensation and flattening functions are independent of each other and no synergistic mechanism is formed, resulting in a high wrinkle rate and poor material adaptability of the decorative paper when winding. Summary of the Invention
[0005] The present invention provides a decorative paper printing and winding device, which solves the technical problem in the related art that when the winding diameter increases or the printing speed fluctuates, the tension cannot be dynamically adjusted, resulting in tension attenuation when the winding diameter changes, speed fluctuations causing sudden tension changes, and directly causing wrinkles in the decorative paper when it is rolled.
[0006] The present invention provides a decorative paper printing and winding device, including a device body, the device body including a frame, a first connecting tube and a second connecting tube are provided inside the frame; a flattening unit, the flattening unit including a fixed frame arranged above the first connecting tube, the fixed frame is fixedly connected to the limiting frame, a plurality of groups of smoothing frames are provided on the outer surface of the first connecting tube, and a reciprocating unfolding mechanism is provided between the fixed frame and the smoothing frame.
[0007] As a further optimization solution of the present invention, the internal bearings of the smoothing frame are connected to multiple groups of rollers, and the rollers perform transverse reciprocating motion along with the reciprocating unfolding mechanism, and mechanically flatten the wrinkles on the surface of the decorative paper by alternating rolling.
[0008] As a further optimization scheme of the present invention, the reciprocating expansion mechanism includes four groups of rotating shafts respectively connected to the two sides of the fixed frame with bearings, a rotating arm is installed on the rotating shaft, and the end of the rotating arm away from the rotating shaft is rotatably connected to the first connecting rod via the rotating shaft, the end of the first connecting rod away from the rotating arm is rotatably connected to the second connecting rod via the rotating shaft, and the second connecting rod is rotatably connected to the fixed frame via the rotating shaft, a movable frame is provided on both sides of the fixed frame, and both sides of the top of the movable frame are rotatably connected to the first connecting rod via the rotating shaft.
[0009] As a further optimization solution of the present invention, when the rotating arm rotates, the rotating arm drives the first connecting rod and the second connecting rod to swing, forming an elliptical swing trajectory.
[0010] As a further optimization scheme of the present invention, each two groups of rotating shafts are connected by a first pulley transmission mechanism, the two middle groups of rotating shafts are equipped with gears, and the gears are meshed with each other, one of the middle groups of rotating shafts is equipped with a first bevel gear, and the first bevel gear is meshed with a second bevel gear, a transmission shaft (5410) is installed on the second bevel gear, and the first connecting tube and the transmission shaft (5410) are connected by a second pulley transmission mechanism (5411).
[0011] As a further optimization scheme of the present invention, a movable groove is opened inside the movable frame, and a movable shaft is slidably connected inside the movable groove. The end of the movable shaft away from the movable groove is fixedly connected to the smoothing frame, and a second spring is installed between the movable groove and the movable shaft.
[0012] As a further optimization scheme of the present invention, an adjustment unit is provided between the frame and the first connecting cylinder, the adjustment unit includes a connecting shaft connected to both sides of the frame by bearings, and a first swing arm is installed on the connecting shaft, the first swing arm is rotatably connected to the second swing arm via a rotating shaft, and the end of the second swing arm away from the first swing arm is rotatably connected to a connecting block via a rotating shaft.
[0013] As a further optimization scheme of the present invention, the frame is also rotatably connected to a cylinder via a rotating shaft, and the telescopic end of the cylinder is rotatably connected to the first swing arm via a rotating shaft. When the cylinder piston rod is extended, it pushes the first swing arm to rotate around the connecting shaft, and drives the connecting block to move through the second swing arm, thereby driving the limit frame to slide in the limit slide groove, so that the first connecting tube applies initial pressure to the running direction of the decorative paper.
[0014] As a further optimization solution of the present invention, a limiting frame is provided on the side of the connecting block away from the second swing arm, the limiting frame is connected to the first connecting tube bearing, and a limiting slide groove adapted to the limiting frame is provided on the frame.
[0015] As a further optimization solution of the present invention, a guide column is installed on the limit frame, and the guide column is slidably connected to the inside of the connecting block. A first spring is provided on the outside of the guide column, and both ends of the first spring are respectively installed on the connecting block and the limit frame.
[0016] The beneficial effects of the present invention are as follows: the present invention realizes dynamic adjustment of tension through the adjustment unit, and the flattening unit completes the elimination of surface wrinkles. When the tension fluctuates, the adjustment unit compensates for the tension while the flattening unit synchronously adjusts the flattening pressure and position, thereby further reducing the winding wrinkle rate; and, when the thickness of the decorative paper changes, the adjustment unit compensates for the tension difference through the first spring and the swing arm mechanism, and the flattening unit adaptively adjusts the flattening pressure through the elastic support of the second spring and the movable shaft, thereby realizing tension gradient compensation and constant flattening force, significantly improving the adaptability of the equipment to thickness fluctuations, shortening the material change and debugging time, and realizing high-quality winding of decorative papers of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention Figure 2 ;
[0019] Figure 3 It is a schematic diagram of the top structure of the present invention;
[0020] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the present invention;
[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the adjustment unit of the present invention;
[0022] Figure 6 This is a schematic diagram of the flattening unit three-dimensional structure of the present invention Figure 1 ;
[0023] Figure 7 This is a schematic diagram of the flattening unit three-dimensional structure of the present invention Figure 2 ;
[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the reciprocating expansion mechanism of the present invention;
[0025] Figure 9 It is a schematic diagram of the partial three-dimensional structure of the flattening unit of the present invention.
[0026] In the figure: 100, device body; 110, frame; 120, pressure roller; 130, first connecting cylinder; 140, second connecting cylinder; 200, unwinder; 300, winder; 400, adjustment unit; 410, connecting shaft; 420, first swing arm; 430, second swing arm; 440, connecting block; 450, limit frame; 460, guide column; 470, first spring; 480, cylinder; 500, flattening unit; 510, fixed Fixed frame; 520, smoothing frame; 530, roller; 540, reciprocating unfolding mechanism; 541, rotating shaft; 542, rotating arm; 543, first connecting rod; 544, second connecting rod; 545, movable frame; 546, first pulley transmission mechanism; 547, gear; 548, first bevel gear; 549, second bevel gear; 5410, transmission shaft; 5411, second pulley transmission mechanism; 550, movable shaft; 560, second spring. DETAILED DESCRIPTION
[0027] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.
[0028] According to the attached Figure 1 To the attached Figure 3 As shown, a decorative paper printing and winding device includes a device body 100, which includes a frame 110, and the internal bearings of the frame 110 are connected to multiple groups of pressure rollers 120. The frame 110 is also provided with a first connecting cylinder 130 and a second connecting cylinder 140 inside, and the second connecting cylinder 140 is rotatably connected to the frame 110 through a bearing; and an unwinder 200 and a winder 300, which are respectively installed at both ends of the frame 110.
[0029] In one embodiment, according to the attached Figure 4 To the attached Figure 5As shown, an adjustment unit 400 is provided between the frame 110 and the first connecting tube 130, and the adjustment unit 400 includes a connecting shaft 410 connected to both sides of the frame 110 by bearings, and a first swing arm 420 is installed on the connecting shaft 410, and the first swing arm 420 is rotatably connected to the second swing arm 430 via a rotating shaft, and the end of the second swing arm 430 away from the first swing arm 420 is rotatably connected to the connecting block 440 via a rotating shaft, and a limiting frame 450 is provided on the side of the connecting block 440 away from the second swing arm 430, and the limiting frame 450 is connected to the first connecting tube 130 by bearings, and a limiting slide groove adapted to the limiting frame 450 is opened on the frame 110, and the frame 110 is also rotatably connected to the cylinder 480 via a rotating shaft, and the telescopic end of the cylinder 480 is rotatably connected to the first swing arm 420 via a rotating shaft.
[0030] Specifically, according to the attached Figure 4 To the attached Figure 5 As shown, a guide column 460 is installed on the limit frame 450, and the guide column 460 is slidably connected to the inside of the connecting block 440. A first spring 470 is provided on the outside of the guide column 460, and the two ends of the first spring 470 are respectively installed on the connecting block 440 and the limit frame 450.
[0031] It should be noted that when the piston rod of the cylinder 480 is extended, it pushes the first swing arm 420 to rotate around the connecting shaft 410, and drives the connecting block 440 to move through the second swing arm 430, thereby driving the limit frame 450 to slide in the limit slide groove, so that the first connecting tube 130 applies initial pressure in the running direction of the decorative paper to establish a preset tension value.
[0032] When the decorative paper force increases due to changes in the roll diameter or fluctuations in the printing speed, the pushing force of the paper on the first connecting tube 130 is transmitted to the guide post 460 through the limit frame 450, compressing the first spring 470 to move the limit frame 450 backward, and the first swing arm 420 and the second swing arm 430 release the tension by changing their angles; conversely, when the tension decreases, the first spring 470 returns to its original position and pushes the limit frame 450 forward, compensating for the tension loss through the swing arm mechanism.
[0033] At the same time, when the thickness of the decorative paper changes, a radial thrust is generated when the paper passes through the gap between the first connecting cylinder 130 and the pressure roller 120. The thrust is transmitted to the guide column 460 and the first spring 470 through the limit frame 450, compressing the first spring 470 to move the limit frame 450 backward, avoiding uneven winding tightness due to thickness differences, realizing automatic gradient compensation of tension with thickness, and solving the problem of uneven winding tightness due to thickness differences.
[0034] In yet another embodiment, according to the attached Figure 6 and attached Figure 7As shown, the flattening unit 500 is mounted on the first connecting tube 130. The flattening unit 500 includes a fixed frame 510 disposed above the first connecting tube 130 and fixedly connected to the limiting frame 450. Multiple smoothing frames 520 are mounted on the outer surface of the first connecting tube 130, and multiple rollers 530 are connected to the internal bearings of the smoothing frames 520. A reciprocating unfolding mechanism 540 is disposed between the fixed frame 510 and the smoothing frames 520. The rollers 530 reciprocate horizontally with the reciprocating unfolding mechanism 540, mechanically flattening wrinkles on the decorative paper surface through alternating rolling. This effectively addresses various types of wrinkles, significantly improving surface flatness and meeting the winding requirements of high-precision decorative paper printing. Furthermore, the rollers 530 continuously rotate during the flattening process, smoothing out subtle ripples on the decorative paper surface. Combined with their special surface texture design, this optimizes the smoothness and flatness of the paper surface, providing a superior substrate for subsequent printing or processing steps.
[0035] In yet another embodiment, according to the attached Figure 6 , Attachment Figure 7 and attached Figure 8 As shown, the reciprocating expansion mechanism 540 includes four groups of rotating shafts 541 respectively connected to both sides of the fixed frame 510 by bearings, and a rotating arm 542 is installed on the rotating shaft 541, and the end of the rotating arm 542 away from the rotating shaft 541 is rotatably connected to the first connecting rod 543 via the rotating shaft, and the end of the first connecting rod 543 away from the rotating arm 542 is rotatably connected to the second connecting rod 544 via the rotating shaft, and the second connecting rod 544 is rotatably connected to the fixed frame 510 via the rotating shaft. Movable frames 545 are provided on both sides of the fixed frame 510, and both sides of the top of the movable frame 545 are rotatably connected to the first connecting rod 543 via the rotating shaft.
[0036] Specifically, according to the attached Figure 7 As shown, every two groups of rotating shafts 541 are connected by a first pulley transmission mechanism 546, the two middle groups of rotating shafts 541 are equipped with gears 547, and the gears 547 are meshed with each other, one of the middle groups of rotating shafts 541 is equipped with a first bevel gear 548, and the first bevel gear 548 is meshed with a second bevel gear 549, a transmission shaft 5410 is installed on the second bevel gear 549, and the bearings on the transmission shaft 5410 are connected to multiple groups of support seats, the support seats are fixedly connected to the fixed frame 510, and the first connecting cylinder 130 and the transmission shaft 5410 are connected by a second pulley transmission mechanism 5411.
[0037] In other embodiments, according to the attached Figure 9 As shown, a movable groove is provided inside the movable frame 545, and a movable shaft 550 is slidably connected inside the movable groove. The end of the movable shaft 550 away from the movable groove is fixedly connected to the smoothing frame 520, and a second spring 560 is installed between the movable groove and the movable shaft 550.
[0038] During operation, when the decorative paper is being rolled up, the unwinder 200 and the winder 300 are working, and the first connecting cylinder 130 is rotating.
[0039] When the first connecting cylinder 130 rotates, the transmission shaft 5410 is driven to rotate synchronously through the second pulley transmission mechanism 5411, and the rotating shaft 541 connected thereto is driven to rotate through the meshing connection of the first bevel gear 548 and the second bevel gear 549. Under the action of the meshing connection of the gear 547 and the transmission connection of the first pulley transmission mechanism 546, the rotating shafts 541 on both sides rotate in opposite directions, thereby driving the rotating arm 542 to rotate.
[0040] When the rotating arm 542 rotates, the rotating arm 542 drives the first connecting rod 543 and the second connecting rod 544 to swing, forming an elliptical swing trajectory.
[0041] When the first connecting rod 543 swings downward, the movable frame 545 controls the smoothing frame 520 to flatten the surface of the decorative paper; when the first connecting rod 543 swings upward, the movable frame 545 controls the smoothing frame 520 to move away from the decorative paper and return the smoothing frame 520 to the initial smoothing position, and the decorative paper is smoothed in this reciprocating manner.
[0042] When the smoothing frame 520 is controlled to flatten the decorative paper, the second spring 560 elastically supports the downward movement space of the smoothing frame 520, so that the smoothing frame 520 can always be in contact with the decorative paper, and the setting of the roller 530 makes it easier to unfold the decorative paper.
[0043] The above describes an embodiment of this specific implementation method, but this embodiment is not limited to the above specific implementation method. The above specific implementation method is merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.
Claims
1. A decorative paper printing and winding device, characterized in that: include: A device body (100), the device body (100) includes a frame (110), and a first connecting cylinder (130) and a second connecting cylinder (140) are provided inside the frame (110); A flattening unit (500) includes a fixing frame (510) arranged above the first connecting tube (130), a plurality of smoothing frames (520) are provided on the outer surface of the first connecting tube (130), and a reciprocating unfolding mechanism (540) is provided between the fixing frame (510) and the smoothing frames (520).
2. The decorative paper printing and winding device according to claim 1, characterized in that: The internal bearings of the smoothing frame (520) are connected to multiple groups of rollers (530), and the rollers (530) perform transverse reciprocating motion along with the reciprocating unfolding mechanism (540), and mechanically flatten the wrinkles on the surface of the decorative paper by alternately rolling.
3. The decorative paper printing and winding device according to claim 1, characterized in that: The reciprocating expansion mechanism (540) includes four groups of rotating shafts (541) respectively connected to both sides of the fixed frame (510) by bearings. A rotating arm (542) is installed on the rotating shaft (541), and the end of the rotating arm (542) away from the rotating shaft (541) is rotatably connected to a first connecting rod (543) via a rotating shaft. The end of the first connecting rod (543) away from the rotating arm (542) is rotatably connected to a second connecting rod (544) via a rotating shaft, and the second connecting rod (544) is rotatably connected to the fixed frame (510) via a rotating shaft. A movable frame (545) is provided on both sides of the fixed frame (510), and both sides of the top of the movable frame (545) are rotatably connected to the first connecting rod (543) via a rotating shaft.
4. The decorative paper printing and winding device according to claim 3, characterized in that: When the rotating arm (542) rotates, the rotating arm (542) drives the first connecting rod (543) and the second connecting rod (544) to swing, forming an elliptical swing trajectory.
5. The decorative paper printing and winding device according to claim 3, characterized in that: Each two groups of rotating shafts (541) are connected to each other through a first pulley transmission mechanism (546); gears (547) are installed on the two middle groups of rotating shafts (541), and the gears (547) are meshed with each other; a first bevel tooth (548) is installed on one of the middle groups of rotating shafts (541), and a second bevel tooth (549) is meshed with the first bevel tooth (548); a transmission shaft (5410) is installed on the second bevel tooth (549); and the first connecting cylinder (130) and the transmission shaft (5410) are connected to each other through a second pulley transmission mechanism (5411).
6. The decorative paper printing and winding device according to claim 3, characterized in that: A movable groove is provided inside the movable frame (545), and a movable shaft (550) is slidably connected inside the movable groove. The end of the movable shaft (550) away from the movable groove is fixedly connected to the smoothing frame (520), and a second spring (560) is installed between the movable groove and the movable shaft (550).
7. The decorative paper printing and winding device according to claim 1, characterized in that: An adjustment unit (400) is provided between the frame (110) and the first connecting cylinder (130). The adjustment unit (400) comprises a connecting shaft (410) connected to both sides of the frame (110) by bearings, and a first swing arm (420) is mounted on the connecting shaft (410). A second swing arm (430) is rotatably connected to the first swing arm (420) via a rotating shaft, and an end of the second swing arm (430) away from the first swing arm (420) is rotatably connected to a connecting block (440) via a rotating shaft.
8. The decorative paper printing and winding device according to claim 7, characterized in that: The frame (110) is also rotatably connected to a cylinder (480) via a rotating shaft, and the telescopic end of the cylinder (480) is rotatably connected to the first swing arm (420) via the rotating shaft. When the piston rod of the cylinder (480) is extended, the first swing arm (420) is pushed to rotate around the connecting shaft (410), and the connecting block (440) is driven to move via the second swing arm (430), thereby driving the limiting frame (450) to slide in the limiting slide groove, so that the first connecting tube (130) applies initial pressure in the running direction of the decorative paper.
9. The decorative paper printing and winding device according to claim 7, characterized in that: A limiting frame (450) is provided on a side of the connecting block (440) away from the second swing arm (430), the limiting frame (450) is connected to the first connecting cylinder (130) by a bearing, and a limiting sliding groove adapted to the limiting frame (450) is provided on the frame (110).
10. The decorative paper printing and winding device according to claim 9, characterized in that: A guide column (460) is installed on the limiting frame (450), and the guide column (460) is slidably connected to the inside of the connecting block (440). A first spring (470) is provided on the outside of the guide column (460), and two ends of the first spring (470) are respectively installed on the connecting block (440) and the limiting frame (450).